Home / 1,121,502.73-1,547,653.80-638,057.47

Finding the Fourth Proportional to 1,121,502.73, 1,547,653.80 and 638,057.47

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Solution

The fourth proportional to 1,121,502.73, 1,547,653.80 and 638,057.47 is: 880,507.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,502.73 : 1,547,653.80 = 638,057.47 : x
  2. Step 2: Convert to fraction form
    1,121,502.73/1,547,653.80 = 638,057.47/x
  3. Step 3: Cross multiply
    1,121,502.73x = 1,547,653.80 × 638,057.47
  4. Step 4: Simplify right side
    1,121,502.73x = 987,492,068,063.89
  5. Step 5: Solve for x
    x = 987,492,068,063.89/1,121,502.73
  6. Step 6: Final answer
    x = 880,507.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.